Turning and boring lathe.



No. 689,07l. Patented Dec. l7, l90i. G. A. ENSIGN. TURNING AND BORINGLATHE.

( Application filed May 22, 1901.)

(No Model.) 3 Sheets-Sheet I.

A TTOHNE YS m: Noam wnzns co: Pwm'ouwa, WASHINGTON, u c.

No. 689,07I.

TURNING AND BORING LATHE.

(Application flied May 22, 1901.)

(No Model.)

3 Sheets-Sheet 2.

WITNESSES: /NVEN7'0/? N0. 689.07... Patented Dec. l7, 190i. G. A.ENSIEN.

TURNING AND BORING LATHE.

(Application filed May 22, 1901.)

//v VENTOff rrno STATES tries.

GEORGE A. ENSIGN, OF DEFIANOE, OHIO,'ASSIGNOR TO THE DEFIANCE MACHINEWVORKS, OF DEFIANOE, OI-IIO, A CORPORATION OF OHIO.

TURNING AND BORING LATHE.

SPEGIFIGATION forming part of Letters Patent No. 689,071, dated December17, 1901.

Application filed May 22, 1901.

To all whom it may concern:

Be it known that I, Gnonen A. ENSIGN, a citizen of the United States,and a resident of Defiance, in the county of Defiance and State of Ohio,have invented a new and Improved Turning and Boring Lathe, of which thefollowing is a full, clear, and exact description.

The invention relates to Woodworking machinery; and its object is toprovide a new and improved turning and boring lathe designed for rapidlyand accurately producing various articles fromwood and arranged tocompletely bore, turn, polish, and cut off the article from the stock,so that no further hand-labor is required,and the article appearsexceedingly sharp, clean, and smooth when leaving the lathe.

The invention consists of novel features and parts and combinations ofthe same, as will be fully described hereinafter, and then pointed outin the claims.

A practical embodiment of the invention is represented-in theaccompanying drawings, forming a part of this specification, in whichsimilar characters of reference indicate corresponding parts in all theviews.

Figure 1 is a perspective View of the improvement. Fig. 2 is an enlargedtransverse section of the same on the line 2 2 in Fig. 1. Fig. 3 is alike view of the same on the line 3 3 in Fig. 1, and Fig. 4 is asectional side elevation of the tool-post and the finishing-tool heldthereon.

On the bed A of the lathe is mounted a suitable head-stock B, carrying aspindle 0, provided with driving-pulleys D and with a chuck E forengaging and holding one end of the stock F to be first acted on at itsother end by a roughening-tool G, then bored by a bit H, then finishedby a finishing-tool I, the finished article being finally cut off theouter end of the stock by a cut-off tool J. The ronghening-tool Gextends through a slot K into the mouth of a bushing K, removably heldin a suitable bearing on the carriage L, the aXis of the bushingcoinciding with the axis'of the spindle C, so that the free end of thestock F can pass through the bore of the bushing, the size of the boreconforming to the largest diameter of the article to be fin- Serial No.filAOl- (N0 model.)

ished. As shown in Fig. 2, the bushing is formed at its front face witha flange K ,abutting against the front of the carriage L, and aset-screw K screwing in the latter, serves to securely hold the bushingin position.

A carriage L is mounted to slide longit'u riage L is movedlongitudinally toward the head-stock B to cause the roughening-tool G toroughen the stock F at the free end there of, the roughened portion ofthe stock passing through the bore of the bushing K and projecting fromthe right-hand side thereof, to be then engaged by the finishing-tool Ifor turning this end of the stock into the comple-te article.

In case the article is to be bored in addition to being turned, the bitH is first moved up to bore theend of the stock previous to finishiugthe same by the tool I; but in case the article is not to be bored thenthe bit H is dispensed with and a cup-shaped center is employed toengage the outer end of the stock and hold the same true during thefinishing process. \Vhen the stock, however, is bored by the bit, thenthe latter remains in position during the finishing process by the toolI, so that the stock is steadied at the outer end. The roughening-tool Gis held on a tool-post G, fulcrnmed at G on the carriage L, and a screwG screwing on said carriage, engages the bottom of the tool-post G topermit of adjusting the tool-post and bringing the cutting edge of theroughening-tool G in proper position relatively to the stock. A

bolt G extending through a segmental slot G in the tool-post G, servesto fasten the latter in place after the tool-post is adjusted, aspreviously mentioned. A clamping-bar G engages the top of theroughening-tool, so as to securely hold the same in placein the toolpostG, and aset-screw G" presses the clamping-bar G for the purposementioned.

The finishing tool I has a cross-section throughout its lengthconforming to the shape of the article to be turned from the stock F,and the cutting edge of the'tool is formed by beveling one end thereofin the usual manner, as is plainly indicated in Fig. 3. The tool I ismoved transversely through the stock, the cutting edge and the upperface being a distance from the axis of the stock, so that during thetransverse movement of the tool I the stock is turned to the exactshape, it being understood that the distance the cutting edge passesthrough the stock from the axis thereof corresponds to the diameters ofthe article to be finished.

The finishing-tool I is held in a tool-post N and is fastened therein byset-screws N, engaging the top of the tooll, so as to press the sameincontact with removable bottom pieces N as isplainly indicated in Figs. 3and 4.

The tool-post N has its base .N mounted to slide on transverse guidewaysN, fulcrumed at N on the front of the carriage L, and on the free end ofsaid guideways N is arranged a yoke N engaged by a screw-rod N abuttingwith its lower end on the carriage L, so as to hold the guideway N in adesired inclined position, so that when the tool-post N is movedtransversely on the guideway the cutting edge and top of the finishedtoolIare the desired distance from the axis of the stock. The yoke N isadapted to be locked in place on the carriage L after the desiredadjustment is made by the screw N and for this purpose a b'oltN isprovided, screwing in the carriage L and extending through a segmentalslot N formed in the yoke N, as is plainly shown in Figs. 2 and 3.

In order to impart the desired transverse movement to the tool-post N,the latter is provided with a rack O in mesh with a pinion 0', securedon a shaft 0 mounted to turn and to slide longitudinally in bearingscarried by the carriage L. A handle 0 is securedon the shaft 0 and isadapted to be taken hold of by the operator to enable the latter toimpart a turning motion to the shaft 0 and to cause the pinion O to movethe rack 0 and tool-post N transversely to cause the tool I to engageand turn the stock, as above explained, and to return the tool I to astarting position, as shown in Fig. 3. A block 0 is held between thepinion O and one of the bearings for the shaft 0 so as to hold thepinion O in mesh with the rack 0; but when the attendant desires tochange the position of the handle 0 then he releases the block 0 andpulls 011 the handle 0 to slide the shaft 0 from the left to the right,and thereby move the pinion 0 out of mesh with the rack O. The attendantcan now move the handle into a desired position and then slide the shaft0 from the right to the left to again move the pinion O in mesh with therack O. The block 0 is then again inserted between the pinion O and thebearing to hold the pinion in mesh with the rack.

The cut-off tool J is secured on a tool carrier or post P, mounted toslide vertically on bearings L secured or formed on the carriage L, andon said carrier P is arranged a pin P, extending through an elongatedslot P in an arm P fulcrumed at P on the car riage L. (See Fig. 2.) Aspring P is connected with the arm P so as to hold the latter and thecut-off tool J normally in an uppermost position, said spring P beingconnected with a screw-rod P for regulating the tension of the spring PA lever P adapted to be taken hold of by the attendant, is connectedwith the arm P so that upon swinging the lever P downward in a forwarddirection against the tension of the spring P then the arm P by the pinP imparts a downward sliding motion to the tool post or carrier P andmoves the cut-off tool J in engagement with the stock at the end of thearticle formed by the tool I and adjacent to the outer end of thebushing K, so that the article is out offfrom the stock. when theattendant releases the pressure on the lever P then the spring P returnsthe several parts to'an uppermost dormant position. The arm P can alsobe automatically actuated from the tool-post N, and for this purpose thearm P is provided with an angular arm P carrying a vertical roller Padapted to be engaged by a lug P secured to the base N of the tool-postN, so that when the latter is moved transversely and the tool Ihasfinished the article then the lug P moves in engagement with thefriction-roller P and imparts a swinging motion to the arms P and P toslide the carrier Pdown ward, and thereby cause the cut-off tool J tocut off the article from the stock after the article has been finishedby the tool I. The tail-stock center Q, carrying the bit H orcup-center, is adjustably held by a set-screw Q in the tail-stock Qmounted to slide on the guideway A, and on said tail-stock Q isjournaled a shaft Q carrying a pinion Q in mesh with the rack L, so thatwhen the shaft Q is turned the tail-stock can be longitudinally adjustedon the guideway A to bring the bit H or the cupcenter in engagement withthe end of the stock for the purpose previously mentioned. A hand-wheelQ is secured on the outer end of the shaft Q to permit the attendant toconveniently and quickly turn the shaft Q On the bed A, adjacent to thehead-stock B, is secured a stop It for the carriage L to limit themovement of the said carriage from the right to the left and prevent theroughening-tool G from moving in engagement with the chuck E.

The operation is as follows: The stock F,

of a desired length and diameter, is secured at one end in the chuck E,and then the attendant by turning the hand-wheel L feeds the carriage Lfrom the right to the left, so

that the roughening-tool G turns the stock F, the turned portion passingthrough the bushing K to the right-hand side thereof, and when thedesired length projects beyond the bushing corresponding to that of thearticle then the attendant stops the feed of the carriage L, takes holdof the handle 0 and swings the same upwardly and transversely to causethe tool-post N to feed the tool I throughthe stock, and thereby turnthe article to the desired shape. As the top face of the tool Icorresponds to the shape of the finished article it is evident thatafter the cutting edge has dressed the stock to the shape of the articlethen the top surface of the tool I moves in engagement with the article,and thereby polishes and smoothes the same. The attendant then swingsthe handle 0 back to its previous position, so that the tool I moves outof engagement with the article, and the latter is now out off, aspreviously explained, either by the operator swinging the lever Pdownward or the lug P having previously engaged the frictionroller P asdescribed. In case the article has to be bored, then the bit H is usedas previously explained, the bit remaining in position during thefinishing operation by the tool I, and then the bit is run out of thearticle previously to cutting the article from the stock by the cut-offtool J. After the article has been cut the operator again turns thehand-wheel L and the above-described operation is repeated.

Having thus fully described my invention, I claim as new and desire tosecureby Letters Patent- 1. A lathe having a tool-post mounted to slidetransversely relatively to the stock, a finishing and polishing toolcarried by the tool-post and having its cutting edge and top .faceconforming to the shape of the article to be turned, a guideway pivotedat one end and upon which the toolpost slides, an adjusting device forthe free end of the guideway, a rack on the tool-post, a pinion movablein and out of mesh with the rack, and means for operating the pinion, asset forth.

2. A lathe having a tool-post mounted to slide transversely to thestock, a finishing and polishing tool carried by the post, a guidewaypivoted at one end and on which the post slides, an adjusting device forthe free end of the guideway, a rack on the tool-post, a shaft mountedto slide and turn, a pinion on the shaft and meshing with the rack, ahandle on the shaft for turning and sliding it, and means for lockingthe shaft against sliding movement, as set forth.

3. A lathe having a tool-post mounted to slide and provided with arack,a shaft mounted to turn and to slide and provided with a pinionmeshing with the rack, and with a handle for turning and sliding it, andmeans for locking the shaft against sliding movement, as set forth.

4:. A'lathe having a tool-post carrying a finishing and smoothing tooland mounted to slide transversely and cause the tool to turn the stockand smooth the article turned, a sliding cut-off tool-carrier,and meansadapted to be engaged by the tool-post to operate the cut-off tool, asand for the purpose set forth.

5. A lathe having a tool-post mounted to slide transversely, a rack onsaid tool-post, a pinion in mesh with said rack, a shaft mounted to turnand to slide lengthwise and carrying said pinion, a handle on saidshaft, and a removable block for insertion between the pinion and ashaft-bearing, as set forth.

6.- A lathe, comprising an upper stock-spindle carrying a chuck for thestock, a carrier mounted to slide longitudinally,a stock-bushingremovably held on said carrier in axial alinement with said spindle, arougheningcutter on the carrier and extending through a slot in thebushing to the bore thereof, a tool-post mounted to slide transverselyon the carrier relatively to the stock, a finishingtool on saidtool-post, a vertically-movable carrier carrying a cut-off tool forcutting off the finished article from the stock, and means adapted to beengaged by the tool-post to opcrate the tool-carrier, as set forth.

7. In a lathe, the combination with .a transversely-movablefinishing-tool carrier, of a vertically-sliding cut-off-tool carrier,and an angular arm having one member loosely connected with thecut-off-tool carrier and its other member projecting into the path ofthe finishing-tool carrier, as set forth.

8. In a lathe, the combination with a sliding finishing-tool postprovided with an upwardly-projecting lug, of a vertically-slidingcut-oif-tool carrier provided with a lateral pin, an angular pivoted armhaving a slot in one member through which said pin passes, the othermember of the arm extending down in the path of the lug of thetool-post, and a spring secured to said arm and to a fixed support so asto hold the said carrier in an uppermost position, as set forth.

In testimony whereof I have signed my name to this specification in thepresence'of two subscribing witnesses.

GEORGE A. ENSIGN.

Witnesses:

GEO. W. DEATRIGH, JOSEPH BAUER.

